I went through the same PDF and i have implemented "Partial support installation" . But thing is, i am not able to see any contacts on Sitecore Instance. Also, i did't found any Live Domain configuration in this document so that both can communicate with each other (i.e. Salesforce and Sitecore ).

Is there any Video tutorial or anything available for this ? I have found some code sample from GitHub as well i.e. URL which u mentioned, How to use that ?

FuseIT S4S is a quality and comprehensive connector for Salesforce, if you don't mind to pay the fee. It free you from the hassles to setup all the necessary parts in Salesforce. All the Salesforce calls are just SOQL, a SQL like language to query Salesforce entities. If you know the name of entity and fields, it's actually quite easy to use. To get Contact out of Salesforce, the code would like:

Needless to say that I added these because otherwise i was getting the "SalesForceAuthException". But after I added these, I am now seeing this weird exception in the logs, when I try to add a salesforce user from sitecore user manager,